Xcode 4.2 discontinued GCC 4.2 compiler and downgraded LLVM-GCC to 'legacy' compiler.
Meaning that a lot of scripts/programs will not compile right until they are updated.
This is the reason I stayed with Xcode 4.1. If you encounter problems please downgrade your Xcode 4.2.x to 4.1. (if you relay on my ffmpeg bash script you need to use Xcode 4.1)

Preps:
- While push mail didn't work for my setup, I decided to not use it.
- But also when push was enabled, using my mac email account, I was not able to send a mail to my mac email account from the server. It continues to get back. (loop)
- After installation, at the server setup section. Do not enter your mac account.